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ZHCSFG3B July 2016 – December 2016 TPS546C20A

PRODUCTION DATA.

封装选项

机械数据 (封装 | 引脚)

RVF|40
- MPQF268C

散热焊盘机械数据 (封装 | 引脚)

RVF|40
- QFND333E

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6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) ⁽¹⁾

		MIN	MAX	UNIT
Input voltage	PVIN, AVIN	–0.3	18	V
	PVIN, AVIN< 2 ms transient	–0.3	19
	PVIN - SW (PVIN to SW differential)	–0.3	25
	PVIN - SW (PVIN to SW differential, < 10-ns transient because of SW ringing)	–5	25
	BOOT	–0.3	37
	BOOT – SW (BOOT to SW differential)	–0.3	7
	PMB_CLK, PMB_DATA	–0.3	5.5
	VSEL, SS	–0.3	3.6
	SYNC, RESET/PGD, CNTL, RSP, RSN, RT, ISHARE, FB	–0.3	7
Output voltage	SW	–1	25	V
	SW < 100 ns transient	–5	25
	BP6, COMP, DIFFO, VSHARE	–0.3	7
	SMB_ALRT	–0.3	5.5
	BP3	–0.3	3.6
Operating junction temperature, T_J		–40	150	°C
Storage temperature, T_stg		–55	150	°C

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6.2 ESD Ratings

			VALUE	UNIT
V_(ESD)	Electrostatic discharge	Human-body model (HBM), per ANSI/ESDA/JEDEC JS–001⁽¹⁾	±2000	V
V_(ESD)	Electrostatic discharge	Charged-device model (CDM), per JEDEC specification JESD22-C101⁽²⁾	±1500	V

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

		MIN	NOM	MAX	UNIT
V_AVIN	Controller input voltage	4.5	12	18	V
V_PVIN	Power stage input voltage	4.5	12	18	V
T_J	Junction temperature	–40		125	°C

6.4 Thermal Information

THERMAL METRIC⁽¹⁾		TPS546C20A	UNIT
		RVF (PQFN)
		40 PINS
R_θJA	Junction-to-ambient thermal resistance	28.5	°C/W
R_θJC(top)	Junction-to-case (top) thermal resistance	18	°C/W
R_θJB	Junction-to-board thermal resistance	3.8	°C/W
ψ_JT	Junction-to-top characterization parameter	1	°C/W
ψ_JB	Junction-to-board characterization parameter	3.8	°C/W
R_θJC(bot)	Junction-to-case (bottom) thermal resistance	0.7	°C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report (SPRA953).

6.5 Electrical Characteristics

T_J = –40°C to 125°C, V_PVIN = V_AVIN= 12 V, R_RT = 40.2 kΩ; zero power dissipation (unless otherwise noted)

PARAMETER		TEST CONDITIONS		MIN	TYP	MAX	UNIT
INPUT SUPPLY
V_AVIN	Input supply voltage range			4.5		18	V
V_PVIN	Power stage voltage range			4.5		18	V
I_AVIN	Input Operating Current	Not switching			7.7	12	mA
UVLO
VIN_ON	Input turnon voltage	Factory default setting			4.5		V
		Programmable range, 15 different settings		4.25		7.75	V
		Accuracy		–5%		5%
VIN_OFF	Input turnoff voltage	Factory default setting			4		V
		Programmable range, 15 different settings		4		7.5	V
		Accuracy		–5%		5%
ERROR AMPLIFIER AND FEEDBACK VOLTAGE
V_FB	Feedback pin voltage	Default setting			600		mV
		Setpoint range⁽¹⁾		0.35		1.65	V
		Setpoint resolution⁽¹⁾			2^-9		V
V_FB(ACC)	Feedback pin voltage accuracy	V_FB = 600 mV, 0°C ≤ T_J ≤ 85°C⁽²⁾		–0.5%		0.5%	%
		V_FB = 600 mV, -40°C ≤ T_J ≤ 125°C⁽²⁾		–1%		1%
		V_FB = 1650 mV, -40°C ≤ T_J ≤ 125°C⁽²⁾		–1%		1%
		V_FB = 350 mV, -40°C ≤ T_J ≤ 125°C⁽²⁾		–1.5%		1.5%
A_OL	Open-loop gain⁽¹⁾			80			dB
G_BWP	Gain bandwidth product⁽¹⁾			15			MHz
I_FB	FB pin input bias current	V_FB = 0.6 V		-75		75	nA
I_COMP	Sourcing	V_FB = 0 V		1			mA
I_COMP	Sinking	V_FB = 1.2 V		1			mA
OSCILLATOR
f_SW	Adjustment range⁽²⁾			200		1000	kHz
	Switching frequency⁽²⁾	R_RT = 40.2 kΩ		450	500	550	kHz
V_RMP	Ramp peak-to-peak⁽¹⁾				V_AVIN/6.5		V
V_VLY	Valley voltage⁽¹⁾				1.23		V
SYNCHRONIZATION
V_IH(sync)	High-level input voltage			2.2			V
V_IL(sync)	Low-level input voltage					0.80	V
T_pw(sync)	Sync input iminimum pulse width	Fsw = 160kHz to 1.2MHz				200	ns
T_Mdelay(sync)	Delay from the rising edge of SYNC input to the SW rising edge of the loop master device				515		ns
T_S _delay(sync)	Delay from the falling edge of SYNC input to the SW rising edge of the loop slave device				515		ns
f_SYNC	Synchronization frequency			160		1200	kHz
Δf_SYNC	SYNC pin frequency range from free running frequency⁽¹⁾			–20%		20%
RESET
V_IH(reset)	High-level input voltage⁽¹⁾			1.35			V
V_IL(reset)	Low-level input voltage					0.8	V
T_pw(reset)	Minimum RESET_B pulse width			200			ns
BP6 REGULATOR
V_BP6	Regulator output voltage	I_BP6 = 10 mA		5.85	6.4	6.95	V
V_BP6(do)	Regulator dropout voltage	V_AVIN – V_BP6, V_AVIN = 4.5 V, I_BP6 = 25 mA		100	200	400	mV
I_BP6SC	Regulator short-circuit current⁽¹⁾	V_AVIN = 12 V			150		mA
V_BP6UV	Regulator UVLO voltage⁽¹⁾				3.73		V
V_BP6UV(hyst)	Regulator UVLO voltage hysteresis⁽¹⁾				270		mV
BOOTSTRAP
V_BOOT(drop)	Bootstrap voltage drop	I_BOOT = 5 mA				150	mV
BP3 REGULATOR
V_BP3	3-V regulator output voltage	V_AVIN ≥ 4.5 V, I_BP3 = 5 mA		3	3.2	3.4	V
I_BP3SC	3-V regulator short-circuit current⁽¹⁾			18	35		mA
PWM
T_ON(min)	Minimum controllable pulse width⁽¹⁾					100	ns
T_OFF(min)	Minimum off-time⁽¹⁾				515	550	ns
SOFT START
TON_RISE	Soft-start time	Factory default setting			3		ms
		Programmable range, 16 discrete settings⁽¹⁾ ⁽³⁾		0		100	ms
		Accuracy, TON_RISE = 3 ms, VOUT_COMMAND = 0.95 V		–10%		10%
TON_MAX_FAULT_LIMIT	Upper limit on the time to power up the output	Factory default setting⁽⁴⁾			0		ms
		Programmable range, 16 discrete settings⁽¹⁾ ⁽⁴⁾		0		100	ms
		Accuracy⁽¹⁾		–10%		10%
TON_DELAY	Turn-on delay	Factory default setting			0		ms
		Programmable range, 16 discrete settings⁽¹⁾		0		100	ms
		Accuracy⁽¹⁾		–10%		10%
SOFT STOP
TOFF_FALL	Soft-stop time	Factory default setting⁽⁵⁾			0		ms
		Programmable range, 16 discrete settings^⁽¹⁾ ⁽⁵⁾		0		100	ms
		Accuracy, TOFF_FALL = 1 ms, VOUT_COMMAND = 0.95V		–10%		10%
TOFF_DELAY	Turn-off delay	Factory default setting			0		ms
		Programmable range, 16 discrete settings⁽¹⁾		0		100	ms
		Accuracy⁽¹⁾		–10%		10%
REMOTE SENSE AMPLIFIER
V_DIFFO(ERROR)	Error Voltage from DIFFO to (RSP – RSN)	(V_RSP – V_RSN) = 0.6 V		–4		4	mV
		(V_RSP – V_RSN) = 1.2 V		–5		5
		(V_RSP – V_RSN) = 3 V		–15		15
BW	Closed-loop bandwidth⁽¹⁾			2			MHz
V_DIFFO(max)	Maximum DIFFO output voltage					V_BP6–0.2	V
I_DIFFO	DIFFO sourcing current			1			mA
I_DIFFO	DIFFO sinking current			1			mA
POWER STAGE
R_HS	High-side power device on-resistance	V_BOOT - V_SW = 4.5 V, T_J = 25°C			3.5		mΩ
R_HS	High-side power device on-resistance	V_BOOT - V_SW = 6.3V, T_J = 25°C			3.2		mΩ
R_LS	Low-side power device on-resistance	V_AVIN = 4.5 V, T_J = 25°C			1.5		mΩ
R_LS	Low-side power device on-resistance	V_AVIN ≥ 12 V, T_J = 25°C			1.4		mΩ
T_DEAD(LtoH)	Power stage driver dead-time from Low-side off to High-side on	V_AVIN ≥ 12 V, T_J = 25°C⁽¹⁾			15		ns
T_DEAD(HtoL)	Power stage driver dead-time from High-side off to Low-side on	V_AVIN ≥ 12 V, T_J = 25°C⁽¹⁾			15		ns
CURRENT SHARING
I_SHARE(acc)	Output current sharing accuracy of two devices defined as the ratio of the current difference between two devices to the total current	I_OUT ≥ 20 A per device		–15%		15%
I_SHARE(acc)	Output current sharing accuracy of two devices defined as the current difference between each device and the half of total current	I_OUT < 20 A per device		–3		3	A
LOW-SIDE CURRENT LIMIT PROTECTION
t_OFF(OC)	Off time between restart attempts⁽¹⁾				7 × TON_RISE		ms
IOUT_OC_FAULT_LIMIT	Output current overcurrent fault threshold	Factory default setting			42		A
IOUT_OC_FAULT_LIMIT	Output current overcurrent fault threshold	Programmable range		5		52	A
I_NEGOC	Negative output current overcurrent protection threshold			–60	-40	–20	A
IOUT_OC_WARN_LIMIT	Output current overcurrent warning threshold	Factory default setting			37		A
IOUT_OC_WARN_LIMIT	Output current overcurrent warning threshold	Programmable range		4		50	A
I_OC(acc)	Output current overcurrent fault accuracy	I_OUT ≥ 20 A		–15%		15%
HIGH-SIDE SHORT CIRCUIT PROTECTION
I_HSOC	High-side short-circuit protection fault threshold	(V_BOOT-VSW) = 6.3V, T_J = 25°C			65		A
POWER GOOD (PGOOD) AND OVERVOLTAGE/UNDERVOLTAGE WARNING
R_PGD	PGD pulldown resistance	V_DIFFO = 0, I_PGD = 5 mA			45	60	Ω
I_PGD(OH)	Output high open drain leakage current into PGD pin	V_PGD = 5 V				15	µA
V_PGD(OL)	PGD pin output low level voltage at no supply voltage	V_AVIN=0, I_PGD = 80 μA				0.8	V
V_FBOVW	Overvoltage warning threshold at FB pin (PGD fault threshold on rising)	Factory default, at V_REF = 600 mV		108	112	116	% V_REF
V_FBUVW	Undervoltage warning threshold at FB pin (PGD fault threshold on falling)	Factory default, at V_REF = 600 mV		84	88	92	% V_REF
V_PGD(rise)	PGD good threshold on rising and Undervotlage warning threshold de-assertation threshold at FB pin	V_REF = 600 mV			95		% V_REF
V_PGD(fall)	PGD good threshold on falling and Overvotlage warning threshold de-assertation threshold at FB pin	V_REF = 600 mV			105		% V_REF
OUTPUT OVERVOLTAGE AND UNDERVOLTAGE FAULT PROTECTION
V_FBOVF	Overvoltage fault threshold at FB pin	Factory default, at V_REF = 600 mV		113	117	121	% V_REF
V_FBUVF	Undervoltage fault threshold at FB pin	Factory default, at V_REF = 600mV		79	83	87	% V_REF
OUTPUT VOLTAGE TRIMMIN8
V_FBRES	Resolution of FB steps with VOUT_COMMAND, Trim and Margin				2^-9		V
VOUT_TRANSITION_RATE	Output voltage transition rate	Factory default setting			1		mV/µs
		Programmable range, 8 discrete settings		0.067		1.5	mV/µs
		Accuracy		–10%		10%
VOUT_SCALE_LOOP	Feedback loop scaling factor	Factory default setting			1
VOUT_SCALE_LOOP	Feedback loop scaling factor	Programmable range, 3 discrete settings		0.25		1
VOUT_COMMAND	Output voltage programmable register value, multiply by 2^-9 to get output voltage	Factor default setting			307
		Programmable range	VOUT_SCALE_LOOP = 1	179		845
			VOUT_SCALE_LOOP = 0.5⁽¹⁾	358		1690
			VOUT_SCALE_LOOP = 0.25⁽¹⁾	716		2816
TEMPERATURE SENSE AND THERMAL SHUTDOWN
T_SD	Junction thermal shutdown temperature⁽¹⁾			135	145	160	°C
T_HYST	Junction thermal shutdown hysteresis⁽¹⁾				25		°C
OT_FAULT_LIMIT	Internal overtemperature fault limit⁽¹⁾	Factory default setting			145		°C
OT_FAULT_LIMIT	Internal overtemperature fault limit⁽¹⁾	Programmable range		120		165	°C
OT_WARN_LIMIT	Internal overtemperature warning limit⁽¹⁾	Factory default setting			120		°C
OT_WARN_LIMIT	Internal overtemperature warning limit⁽¹⁾	Programmable range		100		140	°C
T_OT(hys)	Internal overtemperature fault, warning hysteresis⁽¹⁾			15	20	25	°C
MEASUREMENT SYSTEM
M_VOUT(rng)	Output voltage measurement range⁽¹⁾			0		5.8	V
M_VOUT(acc)	Output voltage measurement accuracy	DIFFO = 1.2 V		–2%		2%	%
M_VOUT(lsb)	Output voltage measurement bit resolution⁽¹⁾				2^-9		V
M_IOUT(rng)	Output current measurement range⁽¹⁾			0		52	A
M_IOUT(acc)	Output current measurement accuracy	I_OUT 20 A, T_J= 25°C		–10%	0	10%
		I_OUT ≥ 20 A		–15%		15%
		3A ≤ I_OUT <20 A		–3		3	A
M_IOUT(lsb)	Output current measurement bit resolution⁽¹⁾				62.5		mA
M_TSNS(rng)	Internal temperature sense range⁽¹⁾			-40		165	°C
M_TSNS(acc)	Internal temperature sense accuracy⁽¹⁾	-40°C ≤ T_J ≤ 165°C		–5		5	°C
M_TSNS(lsb)	Internal temperature sense bit resolution⁽¹⁾				1		°C
PMBUS INTERFACE
V_IH(PMBUS)	High-level input voltage on PMB_CLK, PMB_DATA, CNTL			1.35			V
V_IL(PMBUS)	Low-level input voltage on PMB_CLK, PMB_DATA, CNTL					0.8	V
VhysCNTL	Hysteresis on CNTL				170		mV
_IIH(PMBUS)	Input high level current into PMB_CLK, PMB_DATA			–10		10	μA
_IIL(PMBUS)	Input low level current into PMB_CLK, PMB_DATA			–10		10	μA
_ICNTL	CNTL pin pullup current			5		10	μA
_VOL(PMBUS)	Output low level voltage on PMB_DATA, SMB_ALRT	V_AVIN > 4.5 V, input current to PMB_DATA, SMB_ALRT = 4 mA				0.4	V
_IOH(PMBUS)	Output high level open drain leakage current into PMB_DATA, SMB_ALRT	Voltage on PMB_DATA, SMB_ALRT = 5.5 V				10	μA
_IOL(PMBUS)	Output low level open drain leakage current into PMB_DATA, SMB_ALRT	Voltage on PMB_DATA, SMB_ALRT < 0.4 V		4			mA
_FPMBUS	PMBus operating frequency range	Slave mode		10		400	kHz

(1) Specified by design. Not production tested.

(2) The parameter covers 4.5 V to 18 V of AVIN.

(3) The setting of TON_RISE of 0 ms means the unit to bring its output voltage to the programmed regulation value as quickly as possible, which results in an effective TON_RISE time of 1 ms (fastest time supported).

(4) The setting of TON_MAX_FAULT_LIMIT of 0 means disabling TON_MAX_FAULT response and reporting completely.

(5) The setting of TOFF_FALL of 0 ms means the unit to bring its output voltage down to 0 as quickly as possible, which results in an effective TOFF_FALL time of 1 ms (fastest time supported).

6.6 Typical Characteristics

V_PIN = V_AVIN = 12 V, T_A = 25 ºC, R_RT = 40.2 kΩ (unless otherwise specified). Safe operating area curves were measured using a Texas Instruments evaluation module (EVM).